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Commit | Line | Data |
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def88e9a LT |
1 | #include "cache.h" |
2 | #include "refs.h" | |
3 | #include "pkt-line.h" | |
958c24b1 | 4 | #include "sideband.h" |
f6b42a81 JH |
5 | #include "tag.h" |
6 | #include "object.h" | |
f0243f26 | 7 | #include "commit.h" |
77cb17e9 | 8 | #include "exec_cmd.h" |
9b8dc263 JS |
9 | #include "diff.h" |
10 | #include "revision.h" | |
11 | #include "list-objects.h" | |
cc41fa8d | 12 | #include "run-command.h" |
47a59185 | 13 | #include "connect.h" |
051e4005 | 14 | #include "sigchain.h" |
ff5effdf | 15 | #include "version.h" |
daebaa78 | 16 | #include "string-list.h" |
def88e9a | 17 | |
62b4698e | 18 | static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=<n>] <dir>"; |
def88e9a | 19 | |
208acbfb | 20 | /* Remember to update object flag allocation in object.h */ |
937a515a JH |
21 | #define THEY_HAVE (1u << 11) |
22 | #define OUR_REF (1u << 12) | |
23 | #define WANTED (1u << 13) | |
24 | #define COMMON_KNOWN (1u << 14) | |
25 | #define REACHABLE (1u << 15) | |
26 | ||
f53514bc JS |
27 | #define SHALLOW (1u << 16) |
28 | #define NOT_SHALLOW (1u << 17) | |
29 | #define CLIENT_SHALLOW (1u << 18) | |
390eb36b | 30 | #define HIDDEN_REF (1u << 19) |
f53514bc | 31 | |
3fbe2d54 | 32 | static unsigned long oldest_have; |
937a515a | 33 | |
3f1da57f | 34 | static int multi_ack; |
4e10cf9a | 35 | static int no_done; |
348e390b | 36 | static int use_thin_pack, use_ofs_delta, use_include_tag; |
9462e3f5 | 37 | static int no_progress, daemon_mode; |
7199c093 FM |
38 | /* Allow specifying sha1 if it is a ref tip. */ |
39 | #define ALLOW_TIP_SHA1 01 | |
40 | static unsigned int allow_unadvertised_object_request; | |
f0cea83f | 41 | static int shallow_nr; |
b1e9fff7 JH |
42 | static struct object_array have_obj; |
43 | static struct object_array want_obj; | |
6523078b | 44 | static struct object_array extra_edge_obj; |
96f1e58f | 45 | static unsigned int timeout; |
115dedd7 | 46 | static int keepalive = 5; |
d47f3db7 JH |
47 | /* 0 for no sideband, |
48 | * otherwise maximum packet size (up to 65520 bytes). | |
49 | */ | |
96f1e58f | 50 | static int use_sideband; |
42526b47 SP |
51 | static int advertise_refs; |
52 | static int stateless_rpc; | |
960deccb PA |
53 | |
54 | static void reset_timeout(void) | |
55 | { | |
56 | alarm(timeout); | |
57 | } | |
fb9040cc | 58 | |
583b7ea3 JH |
59 | static ssize_t send_client_data(int fd, const char *data, ssize_t sz) |
60 | { | |
958c24b1 | 61 | if (use_sideband) |
d47f3db7 | 62 | return send_sideband(1, fd, data, sz, use_sideband); |
958c24b1 JH |
63 | if (fd == 3) |
64 | /* emergency quit */ | |
65 | fd = 2; | |
66 | if (fd == 2) { | |
93822c22 | 67 | /* XXX: are we happy to lose stuff here? */ |
958c24b1 JH |
68 | xwrite(fd, data, sz); |
69 | return sz; | |
583b7ea3 | 70 | } |
cdf4fb8e JK |
71 | write_or_die(fd, data, sz); |
72 | return sz; | |
583b7ea3 JH |
73 | } |
74 | ||
b790e0f6 NTND |
75 | static int write_one_shallow(const struct commit_graft *graft, void *cb_data) |
76 | { | |
77 | FILE *fp = cb_data; | |
78 | if (graft->nr_parent == -1) | |
79 | fprintf(fp, "--shallow %s\n", sha1_to_hex(graft->sha1)); | |
80 | return 0; | |
81 | } | |
82 | ||
fb9040cc LT |
83 | static void create_pack_file(void) |
84 | { | |
d3180279 | 85 | struct child_process pack_objects = CHILD_PROCESS_INIT; |
363b7817 | 86 | char data[8193], progress[128]; |
583b7ea3 JH |
87 | char abort_msg[] = "aborting due to possible repository " |
88 | "corruption on the remote side."; | |
b1c71b72 | 89 | int buffered = -1; |
1456b043 | 90 | ssize_t sz; |
2dacf26d | 91 | const char *argv[13]; |
cdab4858 NTND |
92 | int i, arg = 0; |
93 | FILE *pipe_fd; | |
75bfc6c2 | 94 | |
cdab4858 | 95 | if (shallow_nr) { |
cdab4858 | 96 | argv[arg++] = "--shallow-file"; |
b790e0f6 | 97 | argv[arg++] = ""; |
f0cea83f | 98 | } |
cdab4858 NTND |
99 | argv[arg++] = "pack-objects"; |
100 | argv[arg++] = "--revs"; | |
101 | if (use_thin_pack) | |
102 | argv[arg++] = "--thin"; | |
75bfc6c2 | 103 | |
cc41fa8d | 104 | argv[arg++] = "--stdout"; |
2dacf26d | 105 | if (shallow_nr) |
106 | argv[arg++] = "--shallow"; | |
cc41fa8d JS |
107 | if (!no_progress) |
108 | argv[arg++] = "--progress"; | |
109 | if (use_ofs_delta) | |
110 | argv[arg++] = "--delta-base-offset"; | |
348e390b SP |
111 | if (use_include_tag) |
112 | argv[arg++] = "--include-tag"; | |
cc41fa8d JS |
113 | argv[arg++] = NULL; |
114 | ||
b9612197 | 115 | pack_objects.in = -1; |
cc41fa8d JS |
116 | pack_objects.out = -1; |
117 | pack_objects.err = -1; | |
118 | pack_objects.git_cmd = 1; | |
119 | pack_objects.argv = argv; | |
21edd3f1 | 120 | |
4c324c00 | 121 | if (start_command(&pack_objects)) |
7e44c935 | 122 | die("git upload-pack: unable to fork git-pack-objects"); |
b1c71b72 | 123 | |
cdab4858 NTND |
124 | pipe_fd = xfdopen(pack_objects.in, "w"); |
125 | ||
b790e0f6 NTND |
126 | if (shallow_nr) |
127 | for_each_commit_graft(write_one_shallow, pipe_fd); | |
128 | ||
cdab4858 NTND |
129 | for (i = 0; i < want_obj.nr; i++) |
130 | fprintf(pipe_fd, "%s\n", | |
131 | sha1_to_hex(want_obj.objects[i].item->sha1)); | |
132 | fprintf(pipe_fd, "--not\n"); | |
133 | for (i = 0; i < have_obj.nr; i++) | |
134 | fprintf(pipe_fd, "%s\n", | |
135 | sha1_to_hex(have_obj.objects[i].item->sha1)); | |
136 | for (i = 0; i < extra_edge_obj.nr; i++) | |
137 | fprintf(pipe_fd, "%s\n", | |
138 | sha1_to_hex(extra_edge_obj.objects[i].item->sha1)); | |
139 | fprintf(pipe_fd, "\n"); | |
140 | fflush(pipe_fd); | |
141 | fclose(pipe_fd); | |
f0cea83f | 142 | |
cc41fa8d JS |
143 | /* We read from pack_objects.err to capture stderr output for |
144 | * progress bar, and pack_objects.out to capture the pack data. | |
b1c71b72 | 145 | */ |
b1c71b72 JH |
146 | |
147 | while (1) { | |
b1c71b72 | 148 | struct pollfd pfd[2]; |
363b7817 | 149 | int pe, pu, pollsize; |
05e95155 | 150 | int ret; |
b1c71b72 | 151 | |
0d516ada ML |
152 | reset_timeout(); |
153 | ||
b1c71b72 | 154 | pollsize = 0; |
363b7817 | 155 | pe = pu = -1; |
b1c71b72 | 156 | |
cc41fa8d JS |
157 | if (0 <= pack_objects.out) { |
158 | pfd[pollsize].fd = pack_objects.out; | |
b1c71b72 JH |
159 | pfd[pollsize].events = POLLIN; |
160 | pu = pollsize; | |
161 | pollsize++; | |
162 | } | |
cc41fa8d JS |
163 | if (0 <= pack_objects.err) { |
164 | pfd[pollsize].fd = pack_objects.err; | |
363b7817 JH |
165 | pfd[pollsize].events = POLLIN; |
166 | pe = pollsize; | |
167 | pollsize++; | |
168 | } | |
b1c71b72 | 169 | |
4c324c00 JS |
170 | if (!pollsize) |
171 | break; | |
172 | ||
6c71f8b0 ET |
173 | ret = poll(pfd, pollsize, |
174 | keepalive < 0 ? -1 : 1000 * keepalive); | |
175 | ||
05e95155 | 176 | if (ret < 0) { |
4c324c00 JS |
177 | if (errno != EINTR) { |
178 | error("poll failed, resuming: %s", | |
179 | strerror(errno)); | |
180 | sleep(1); | |
b1c71b72 | 181 | } |
4c324c00 JS |
182 | continue; |
183 | } | |
6b59f51b NP |
184 | if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) { |
185 | /* Status ready; we ship that in the side-band | |
186 | * or dump to the standard error. | |
187 | */ | |
188 | sz = xread(pack_objects.err, progress, | |
189 | sizeof(progress)); | |
190 | if (0 < sz) | |
191 | send_client_data(2, progress, sz); | |
192 | else if (sz == 0) { | |
193 | close(pack_objects.err); | |
194 | pack_objects.err = -1; | |
195 | } | |
196 | else | |
197 | goto fail; | |
198 | /* give priority to status messages */ | |
199 | continue; | |
200 | } | |
4c324c00 JS |
201 | if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) { |
202 | /* Data ready; we keep the last byte to ourselves | |
203 | * in case we detect broken rev-list, so that we | |
204 | * can leave the stream corrupted. This is | |
205 | * unfortunate -- unpack-objects would happily | |
206 | * accept a valid packdata with trailing garbage, | |
207 | * so appending garbage after we pass all the | |
208 | * pack data is not good enough to signal | |
209 | * breakage to downstream. | |
210 | */ | |
211 | char *cp = data; | |
212 | ssize_t outsz = 0; | |
213 | if (0 <= buffered) { | |
214 | *cp++ = buffered; | |
215 | outsz++; | |
b1c71b72 | 216 | } |
4c324c00 JS |
217 | sz = xread(pack_objects.out, cp, |
218 | sizeof(data) - outsz); | |
219 | if (0 < sz) | |
1456b043 | 220 | ; |
4c324c00 JS |
221 | else if (sz == 0) { |
222 | close(pack_objects.out); | |
223 | pack_objects.out = -1; | |
363b7817 | 224 | } |
4c324c00 JS |
225 | else |
226 | goto fail; | |
227 | sz += outsz; | |
228 | if (1 < sz) { | |
229 | buffered = data[sz-1] & 0xFF; | |
230 | sz--; | |
b1c71b72 | 231 | } |
4c324c00 JS |
232 | else |
233 | buffered = -1; | |
234 | sz = send_client_data(1, data, sz); | |
235 | if (sz < 0) | |
b1c71b72 | 236 | goto fail; |
4c324c00 | 237 | } |
05e95155 JK |
238 | |
239 | /* | |
240 | * We hit the keepalive timeout without saying anything; send | |
241 | * an empty message on the data sideband just to let the other | |
242 | * side know we're still working on it, but don't have any data | |
243 | * yet. | |
244 | * | |
245 | * If we don't have a sideband channel, there's no room in the | |
246 | * protocol to say anything, so those clients are just out of | |
247 | * luck. | |
248 | */ | |
249 | if (!ret && use_sideband) { | |
250 | static const char buf[] = "0005\1"; | |
251 | write_or_die(1, buf, 5); | |
252 | } | |
4c324c00 | 253 | } |
b1c71b72 | 254 | |
4c324c00 | 255 | if (finish_command(&pack_objects)) { |
7e44c935 | 256 | error("git upload-pack: git-pack-objects died with error."); |
4c324c00 JS |
257 | goto fail; |
258 | } | |
b1c71b72 | 259 | |
4c324c00 JS |
260 | /* flush the data */ |
261 | if (0 <= buffered) { | |
262 | data[0] = buffered; | |
263 | sz = send_client_data(1, data, 1); | |
264 | if (sz < 0) | |
265 | goto fail; | |
266 | fprintf(stderr, "flushed.\n"); | |
b1c71b72 | 267 | } |
4c324c00 JS |
268 | if (use_sideband) |
269 | packet_flush(1); | |
270 | return; | |
271 | ||
b1c71b72 | 272 | fail: |
583b7ea3 | 273 | send_client_data(3, abort_msg, sizeof(abort_msg)); |
7e44c935 | 274 | die("git upload-pack: %s", abort_msg); |
fb9040cc LT |
275 | } |
276 | ||
def88e9a LT |
277 | static int got_sha1(char *hex, unsigned char *sha1) |
278 | { | |
b1e9fff7 | 279 | struct object *o; |
937a515a | 280 | int we_knew_they_have = 0; |
b1e9fff7 | 281 | |
def88e9a | 282 | if (get_sha1_hex(hex, sha1)) |
7e44c935 | 283 | die("git upload-pack: expected SHA1 object, got '%s'", hex); |
fb9040cc | 284 | if (!has_sha1_file(sha1)) |
937a515a | 285 | return -1; |
b1e9fff7 | 286 | |
a6eec126 | 287 | o = parse_object(sha1); |
b1e9fff7 JH |
288 | if (!o) |
289 | die("oops (%s)", sha1_to_hex(sha1)); | |
182a8dab | 290 | if (o->type == OBJ_COMMIT) { |
b1e9fff7 | 291 | struct commit_list *parents; |
937a515a | 292 | struct commit *commit = (struct commit *)o; |
b1e9fff7 | 293 | if (o->flags & THEY_HAVE) |
937a515a JH |
294 | we_knew_they_have = 1; |
295 | else | |
296 | o->flags |= THEY_HAVE; | |
297 | if (!oldest_have || (commit->date < oldest_have)) | |
298 | oldest_have = commit->date; | |
299 | for (parents = commit->parents; | |
b1e9fff7 JH |
300 | parents; |
301 | parents = parents->next) | |
302 | parents->item->object.flags |= THEY_HAVE; | |
fb9040cc | 303 | } |
937a515a JH |
304 | if (!we_knew_they_have) { |
305 | add_object_array(o, NULL, &have_obj); | |
306 | return 1; | |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
311 | static int reachable(struct commit *want) | |
312 | { | |
313 | struct commit_list *work = NULL; | |
314 | ||
47e44ed1 | 315 | commit_list_insert_by_date(want, &work); |
937a515a JH |
316 | while (work) { |
317 | struct commit_list *list = work->next; | |
318 | struct commit *commit = work->item; | |
319 | free(work); | |
320 | work = list; | |
321 | ||
322 | if (commit->object.flags & THEY_HAVE) { | |
323 | want->object.flags |= COMMON_KNOWN; | |
324 | break; | |
325 | } | |
326 | if (!commit->object.parsed) | |
327 | parse_object(commit->object.sha1); | |
328 | if (commit->object.flags & REACHABLE) | |
329 | continue; | |
330 | commit->object.flags |= REACHABLE; | |
331 | if (commit->date < oldest_have) | |
332 | continue; | |
333 | for (list = commit->parents; list; list = list->next) { | |
334 | struct commit *parent = list->item; | |
335 | if (!(parent->object.flags & REACHABLE)) | |
47e44ed1 | 336 | commit_list_insert_by_date(parent, &work); |
937a515a JH |
337 | } |
338 | } | |
339 | want->object.flags |= REACHABLE; | |
340 | clear_commit_marks(want, REACHABLE); | |
341 | free_commit_list(work); | |
342 | return (want->object.flags & COMMON_KNOWN); | |
343 | } | |
344 | ||
345 | static int ok_to_give_up(void) | |
346 | { | |
347 | int i; | |
348 | ||
349 | if (!have_obj.nr) | |
350 | return 0; | |
351 | ||
352 | for (i = 0; i < want_obj.nr; i++) { | |
353 | struct object *want = want_obj.objects[i].item; | |
354 | ||
355 | if (want->flags & COMMON_KNOWN) | |
356 | continue; | |
357 | want = deref_tag(want, "a want line", 0); | |
358 | if (!want || want->type != OBJ_COMMIT) { | |
359 | /* no way to tell if this is reachable by | |
360 | * looking at the ancestry chain alone, so | |
361 | * leave a note to ourselves not to worry about | |
362 | * this object anymore. | |
363 | */ | |
364 | want_obj.objects[i].item->flags |= COMMON_KNOWN; | |
365 | continue; | |
366 | } | |
367 | if (!reachable((struct commit *)want)) | |
368 | return 0; | |
369 | } | |
fb9040cc | 370 | return 1; |
def88e9a LT |
371 | } |
372 | ||
373 | static int get_common_commits(void) | |
374 | { | |
c04c4e57 | 375 | unsigned char sha1[20]; |
78affc49 | 376 | char last_hex[41]; |
49bee717 SP |
377 | int got_common = 0; |
378 | int got_other = 0; | |
4e10cf9a | 379 | int sent_ready = 0; |
def88e9a | 380 | |
f0243f26 JS |
381 | save_commit_buffer = 0; |
382 | ||
eeefa7c9 | 383 | for (;;) { |
74543a04 | 384 | char *line = packet_read_line(0, NULL); |
960deccb | 385 | reset_timeout(); |
def88e9a | 386 | |
74543a04 | 387 | if (!line) { |
49bee717 | 388 | if (multi_ack == 2 && got_common |
4e10cf9a JH |
389 | && !got_other && ok_to_give_up()) { |
390 | sent_ready = 1; | |
49bee717 | 391 | packet_write(1, "ACK %s ready\n", last_hex); |
4e10cf9a | 392 | } |
b1e9fff7 | 393 | if (have_obj.nr == 0 || multi_ack) |
1bd8c8f0 | 394 | packet_write(1, "NAK\n"); |
4e10cf9a JH |
395 | |
396 | if (no_done && sent_ready) { | |
397 | packet_write(1, "ACK %s\n", last_hex); | |
398 | return 0; | |
399 | } | |
42526b47 SP |
400 | if (stateless_rpc) |
401 | exit(0); | |
49bee717 SP |
402 | got_common = 0; |
403 | got_other = 0; | |
def88e9a LT |
404 | continue; |
405 | } | |
59556548 | 406 | if (starts_with(line, "have ")) { |
937a515a JH |
407 | switch (got_sha1(line+5, sha1)) { |
408 | case -1: /* they have what we do not */ | |
49bee717 | 409 | got_other = 1; |
78affc49 SP |
410 | if (multi_ack && ok_to_give_up()) { |
411 | const char *hex = sha1_to_hex(sha1); | |
4e10cf9a JH |
412 | if (multi_ack == 2) { |
413 | sent_ready = 1; | |
78affc49 | 414 | packet_write(1, "ACK %s ready\n", hex); |
4e10cf9a | 415 | } else |
78affc49 SP |
416 | packet_write(1, "ACK %s continue\n", hex); |
417 | } | |
937a515a JH |
418 | break; |
419 | default: | |
49bee717 | 420 | got_common = 1; |
78affc49 SP |
421 | memcpy(last_hex, sha1_to_hex(sha1), 41); |
422 | if (multi_ack == 2) | |
423 | packet_write(1, "ACK %s common\n", last_hex); | |
424 | else if (multi_ack) | |
425 | packet_write(1, "ACK %s continue\n", last_hex); | |
c04c4e57 | 426 | else if (have_obj.nr == 1) |
78affc49 | 427 | packet_write(1, "ACK %s\n", last_hex); |
937a515a | 428 | break; |
af2d3aa4 | 429 | } |
def88e9a LT |
430 | continue; |
431 | } | |
432 | if (!strcmp(line, "done")) { | |
b1e9fff7 | 433 | if (have_obj.nr > 0) { |
1bd8c8f0 | 434 | if (multi_ack) |
c04c4e57 | 435 | packet_write(1, "ACK %s\n", last_hex); |
1bd8c8f0 JS |
436 | return 0; |
437 | } | |
def88e9a LT |
438 | packet_write(1, "NAK\n"); |
439 | return -1; | |
440 | } | |
7e44c935 | 441 | die("git upload-pack: expected SHA1 list, got '%s'", line); |
def88e9a | 442 | } |
def88e9a LT |
443 | } |
444 | ||
390eb36b JH |
445 | static int is_our_ref(struct object *o) |
446 | { | |
7199c093 FM |
447 | int allow_hidden_ref = (allow_unadvertised_object_request & ALLOW_TIP_SHA1); |
448 | return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF); | |
390eb36b JH |
449 | } |
450 | ||
051e4005 JH |
451 | static void check_non_tip(void) |
452 | { | |
453 | static const char *argv[] = { | |
454 | "rev-list", "--stdin", NULL, | |
455 | }; | |
d3180279 | 456 | static struct child_process cmd = CHILD_PROCESS_INIT; |
051e4005 JH |
457 | struct object *o; |
458 | char namebuf[42]; /* ^ + SHA-1 + LF */ | |
459 | int i; | |
460 | ||
461 | /* In the normal in-process case non-tip request can never happen */ | |
462 | if (!stateless_rpc) | |
463 | goto error; | |
464 | ||
465 | cmd.argv = argv; | |
466 | cmd.git_cmd = 1; | |
467 | cmd.no_stderr = 1; | |
468 | cmd.in = -1; | |
469 | cmd.out = -1; | |
470 | ||
471 | if (start_command(&cmd)) | |
472 | goto error; | |
473 | ||
474 | /* | |
475 | * If rev-list --stdin encounters an unknown commit, it | |
476 | * terminates, which will cause SIGPIPE in the write loop | |
477 | * below. | |
478 | */ | |
479 | sigchain_push(SIGPIPE, SIG_IGN); | |
480 | ||
481 | namebuf[0] = '^'; | |
482 | namebuf[41] = '\n'; | |
483 | for (i = get_max_object_index(); 0 < i; ) { | |
484 | o = get_indexed_object(--i); | |
2a745324 BH |
485 | if (!o) |
486 | continue; | |
390eb36b | 487 | if (!is_our_ref(o)) |
051e4005 JH |
488 | continue; |
489 | memcpy(namebuf + 1, sha1_to_hex(o->sha1), 40); | |
490 | if (write_in_full(cmd.in, namebuf, 42) < 0) | |
491 | goto error; | |
492 | } | |
493 | namebuf[40] = '\n'; | |
494 | for (i = 0; i < want_obj.nr; i++) { | |
495 | o = want_obj.objects[i].item; | |
390eb36b | 496 | if (is_our_ref(o)) |
051e4005 JH |
497 | continue; |
498 | memcpy(namebuf, sha1_to_hex(o->sha1), 40); | |
499 | if (write_in_full(cmd.in, namebuf, 41) < 0) | |
500 | goto error; | |
501 | } | |
502 | close(cmd.in); | |
503 | ||
504 | sigchain_pop(SIGPIPE); | |
505 | ||
506 | /* | |
507 | * The commits out of the rev-list are not ancestors of | |
508 | * our ref. | |
509 | */ | |
510 | i = read_in_full(cmd.out, namebuf, 1); | |
511 | if (i) | |
512 | goto error; | |
513 | close(cmd.out); | |
514 | ||
515 | /* | |
516 | * rev-list may have died by encountering a bad commit | |
517 | * in the history, in which case we do want to bail out | |
518 | * even when it showed no commit. | |
519 | */ | |
520 | if (finish_command(&cmd)) | |
521 | goto error; | |
522 | ||
523 | /* All the non-tip ones are ancestors of what we advertised */ | |
524 | return; | |
525 | ||
526 | error: | |
527 | /* Pick one of them (we know there at least is one) */ | |
528 | for (i = 0; i < want_obj.nr; i++) { | |
529 | o = want_obj.objects[i].item; | |
390eb36b | 530 | if (!is_our_ref(o)) |
051e4005 JH |
531 | die("git upload-pack: not our ref %s", |
532 | sha1_to_hex(o->sha1)); | |
533 | } | |
534 | } | |
535 | ||
b1e9fff7 | 536 | static void receive_needs(void) |
fb9040cc | 537 | { |
3cd47459 | 538 | struct object_array shallows = OBJECT_ARRAY_INIT; |
74543a04 | 539 | int depth = 0; |
051e4005 | 540 | int has_non_tip = 0; |
fb9040cc | 541 | |
f0cea83f | 542 | shallow_nr = 0; |
fb9040cc | 543 | for (;;) { |
565ebbf7 | 544 | struct object *o; |
f47182c8 | 545 | const char *features; |
6ece0d30 | 546 | unsigned char sha1_buf[20]; |
74543a04 | 547 | char *line = packet_read_line(0, NULL); |
960deccb | 548 | reset_timeout(); |
74543a04 | 549 | if (!line) |
ed09aef0 | 550 | break; |
e091eb93 | 551 | |
59556548 | 552 | if (starts_with(line, "shallow ")) { |
ed09aef0 JS |
553 | unsigned char sha1[20]; |
554 | struct object *object; | |
b7b02170 | 555 | if (get_sha1_hex(line + 8, sha1)) |
ed09aef0 JS |
556 | die("invalid shallow line: %s", line); |
557 | object = parse_object(sha1); | |
558 | if (!object) | |
af04fa2a | 559 | continue; |
6293ded3 NTND |
560 | if (object->type != OBJ_COMMIT) |
561 | die("invalid shallow object %s", sha1_to_hex(sha1)); | |
e58e57e4 JK |
562 | if (!(object->flags & CLIENT_SHALLOW)) { |
563 | object->flags |= CLIENT_SHALLOW; | |
564 | add_object_array(object, NULL, &shallows); | |
565 | } | |
ed09aef0 JS |
566 | continue; |
567 | } | |
59556548 | 568 | if (starts_with(line, "deepen ")) { |
016e6ccb JS |
569 | char *end; |
570 | depth = strtol(line + 7, &end, 0); | |
571 | if (end == line + 7 || depth <= 0) | |
572 | die("Invalid deepen: %s", line); | |
573 | continue; | |
574 | } | |
59556548 | 575 | if (!starts_with(line, "want ") || |
6ece0d30 | 576 | get_sha1_hex(line+5, sha1_buf)) |
7e44c935 | 577 | die("git upload-pack: protocol error, " |
e091eb93 | 578 | "expected to get sha, not '%s'", line); |
f47182c8 JH |
579 | |
580 | features = line + 45; | |
581 | ||
582 | if (parse_feature_request(features, "multi_ack_detailed")) | |
78affc49 | 583 | multi_ack = 2; |
f47182c8 | 584 | else if (parse_feature_request(features, "multi_ack")) |
1bd8c8f0 | 585 | multi_ack = 1; |
f47182c8 | 586 | if (parse_feature_request(features, "no-done")) |
4e10cf9a | 587 | no_done = 1; |
f47182c8 | 588 | if (parse_feature_request(features, "thin-pack")) |
b19696c2 | 589 | use_thin_pack = 1; |
f47182c8 | 590 | if (parse_feature_request(features, "ofs-delta")) |
e4fe4b8e | 591 | use_ofs_delta = 1; |
f47182c8 | 592 | if (parse_feature_request(features, "side-band-64k")) |
d47f3db7 | 593 | use_sideband = LARGE_PACKET_MAX; |
f47182c8 | 594 | else if (parse_feature_request(features, "side-band")) |
d47f3db7 | 595 | use_sideband = DEFAULT_PACKET_MAX; |
f47182c8 | 596 | if (parse_feature_request(features, "no-progress")) |
b0e90897 | 597 | no_progress = 1; |
f47182c8 | 598 | if (parse_feature_request(features, "include-tag")) |
348e390b | 599 | use_include_tag = 1; |
565ebbf7 | 600 | |
f59de5d1 | 601 | o = parse_object(sha1_buf); |
051e4005 | 602 | if (!o) |
9f9aa761 EN |
603 | die("git upload-pack: not our ref %s", |
604 | sha1_to_hex(sha1_buf)); | |
565ebbf7 JH |
605 | if (!(o->flags & WANTED)) { |
606 | o->flags |= WANTED; | |
390eb36b | 607 | if (!is_our_ref(o)) |
051e4005 | 608 | has_non_tip = 1; |
b1e9fff7 | 609 | add_object_array(o, NULL, &want_obj); |
565ebbf7 | 610 | } |
fb9040cc | 611 | } |
9462e3f5 | 612 | |
051e4005 JH |
613 | /* |
614 | * We have sent all our refs already, and the other end | |
615 | * should have chosen out of them. When we are operating | |
616 | * in the stateless RPC mode, however, their choice may | |
617 | * have been based on the set of older refs advertised | |
618 | * by another process that handled the initial request. | |
619 | */ | |
620 | if (has_non_tip) | |
621 | check_non_tip(); | |
622 | ||
9462e3f5 JS |
623 | if (!use_sideband && daemon_mode) |
624 | no_progress = 1; | |
625 | ||
f53514bc JS |
626 | if (depth == 0 && shallows.nr == 0) |
627 | return; | |
016e6ccb | 628 | if (depth > 0) { |
4dcb167f | 629 | struct commit_list *result = NULL, *backup = NULL; |
f53514bc | 630 | int i; |
79d3a236 | 631 | if (depth == INFINITE_DEPTH && !is_repository_shallow()) |
4dcb167f NTND |
632 | for (i = 0; i < shallows.nr; i++) { |
633 | struct object *object = shallows.objects[i].item; | |
634 | object->flags |= NOT_SHALLOW; | |
635 | } | |
636 | else | |
637 | backup = result = | |
638 | get_shallow_commits(&want_obj, depth, | |
639 | SHALLOW, NOT_SHALLOW); | |
016e6ccb | 640 | while (result) { |
f53514bc | 641 | struct object *object = &result->item->object; |
1f2de769 | 642 | if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { |
f53514bc JS |
643 | packet_write(1, "shallow %s", |
644 | sha1_to_hex(object->sha1)); | |
645 | register_shallow(object->sha1); | |
f0cea83f | 646 | shallow_nr++; |
f53514bc | 647 | } |
016e6ccb JS |
648 | result = result->next; |
649 | } | |
650 | free_commit_list(backup); | |
f53514bc JS |
651 | for (i = 0; i < shallows.nr; i++) { |
652 | struct object *object = shallows.objects[i].item; | |
653 | if (object->flags & NOT_SHALLOW) { | |
654 | struct commit_list *parents; | |
655 | packet_write(1, "unshallow %s", | |
656 | sha1_to_hex(object->sha1)); | |
657 | object->flags &= ~CLIENT_SHALLOW; | |
658 | /* make sure the real parents are parsed */ | |
659 | unregister_shallow(object->sha1); | |
176d45cb | 660 | object->parsed = 0; |
367068e0 | 661 | parse_commit_or_die((struct commit *)object); |
f53514bc JS |
662 | parents = ((struct commit *)object)->parents; |
663 | while (parents) { | |
664 | add_object_array(&parents->item->object, | |
665 | NULL, &want_obj); | |
666 | parents = parents->next; | |
667 | } | |
6523078b | 668 | add_object_array(object, NULL, &extra_edge_obj); |
f53514bc JS |
669 | } |
670 | /* make sure commit traversal conforms to client */ | |
671 | register_shallow(object->sha1); | |
672 | } | |
673 | packet_flush(1); | |
674 | } else | |
675 | if (shallows.nr > 0) { | |
676 | int i; | |
677 | for (i = 0; i < shallows.nr; i++) | |
678 | register_shallow(shallows.objects[i].item->sha1); | |
679 | } | |
f0cea83f NE |
680 | |
681 | shallow_nr += shallows.nr; | |
f53514bc | 682 | free(shallows.objects); |
fb9040cc LT |
683 | } |
684 | ||
daebaa78 | 685 | /* return non-zero if the ref is hidden, otherwise 0 */ |
e172755b | 686 | static int mark_our_ref(const char *refname, const unsigned char *sha1) |
cbbe50db JH |
687 | { |
688 | struct object *o = lookup_unknown_object(sha1); | |
daebaa78 | 689 | |
390eb36b JH |
690 | if (ref_is_hidden(refname)) { |
691 | o->flags |= HIDDEN_REF; | |
daebaa78 | 692 | return 1; |
390eb36b | 693 | } |
3f1da57f | 694 | o->flags |= OUR_REF; |
cbbe50db JH |
695 | return 0; |
696 | } | |
697 | ||
e172755b JK |
698 | static int check_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
699 | { | |
700 | mark_our_ref(refname, sha1); | |
701 | return 0; | |
702 | } | |
703 | ||
7171d8c1 JH |
704 | static void format_symref_info(struct strbuf *buf, struct string_list *symref) |
705 | { | |
706 | struct string_list_item *item; | |
707 | ||
708 | if (!symref->nr) | |
709 | return; | |
710 | for_each_string_list_item(item, symref) | |
711 | strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util); | |
712 | } | |
713 | ||
8da19775 | 714 | static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
def88e9a | 715 | { |
ed09aef0 | 716 | static const char *capabilities = "multi_ack thin-pack side-band" |
348e390b | 717 | " side-band-64k ofs-delta shallow no-progress" |
78affc49 | 718 | " include-tag multi_ack_detailed"; |
6b01ecfe | 719 | const char *refname_nons = strip_namespace(refname); |
435c8332 | 720 | unsigned char peeled[20]; |
b5b16990 | 721 | |
e172755b | 722 | if (mark_our_ref(refname, sha1)) |
daebaa78 | 723 | return 0; |
cbbe50db | 724 | |
7171d8c1 JH |
725 | if (capabilities) { |
726 | struct strbuf symref_info = STRBUF_INIT; | |
727 | ||
728 | format_symref_info(&symref_info, cb_data); | |
729 | packet_write(1, "%s %s%c%s%s%s%s agent=%s\n", | |
ff5effdf | 730 | sha1_to_hex(sha1), refname_nons, |
cf2ad8e6 | 731 | 0, capabilities, |
7199c093 FM |
732 | (allow_unadvertised_object_request & ALLOW_TIP_SHA1) ? |
733 | " allow-tip-sha1-in-want" : "", | |
ff5effdf | 734 | stateless_rpc ? " no-done" : "", |
7171d8c1 | 735 | symref_info.buf, |
ff5effdf | 736 | git_user_agent_sanitized()); |
7171d8c1 JH |
737 | strbuf_release(&symref_info); |
738 | } else { | |
6b01ecfe | 739 | packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname_nons); |
7171d8c1 | 740 | } |
1f5881bb | 741 | capabilities = NULL; |
435c8332 JK |
742 | if (!peel_ref(refname, peeled)) |
743 | packet_write(1, "%s %s^{}\n", sha1_to_hex(peeled), refname_nons); | |
def88e9a LT |
744 | return 0; |
745 | } | |
746 | ||
7171d8c1 JH |
747 | static int find_symref(const char *refname, const unsigned char *sha1, int flag, |
748 | void *cb_data) | |
749 | { | |
750 | const char *symref_target; | |
751 | struct string_list_item *item; | |
752 | unsigned char unused[20]; | |
753 | ||
754 | if ((flag & REF_ISSYMREF) == 0) | |
755 | return 0; | |
7695d118 | 756 | symref_target = resolve_ref_unsafe(refname, 0, unused, &flag); |
7171d8c1 JH |
757 | if (!symref_target || (flag & REF_ISSYMREF) == 0) |
758 | die("'%s' is a symref but it is not?", refname); | |
759 | item = string_list_append(cb_data, refname); | |
760 | item->util = xstrdup(symref_target); | |
761 | return 0; | |
762 | } | |
763 | ||
59076eba | 764 | static void upload_pack(void) |
def88e9a | 765 | { |
7171d8c1 JH |
766 | struct string_list symref = STRING_LIST_INIT_DUP; |
767 | ||
768 | head_ref_namespaced(find_symref, &symref); | |
769 | ||
42526b47 SP |
770 | if (advertise_refs || !stateless_rpc) { |
771 | reset_timeout(); | |
7171d8c1 JH |
772 | head_ref_namespaced(send_ref, &symref); |
773 | for_each_namespaced_ref(send_ref, &symref); | |
ad491366 | 774 | advertise_shallow_grafts(1); |
42526b47 SP |
775 | packet_flush(1); |
776 | } else { | |
e172755b JK |
777 | head_ref_namespaced(check_ref, NULL); |
778 | for_each_namespaced_ref(check_ref, NULL); | |
42526b47 | 779 | } |
7171d8c1 | 780 | string_list_clear(&symref, 1); |
42526b47 SP |
781 | if (advertise_refs) |
782 | return; | |
783 | ||
b1e9fff7 | 784 | receive_needs(); |
59076eba DR |
785 | if (want_obj.nr) { |
786 | get_common_commits(); | |
787 | create_pack_file(); | |
788 | } | |
def88e9a LT |
789 | } |
790 | ||
daebaa78 JH |
791 | static int upload_pack_config(const char *var, const char *value, void *unused) |
792 | { | |
7199c093 FM |
793 | if (!strcmp("uploadpack.allowtipsha1inwant", var)) { |
794 | if (git_config_bool(var, value)) | |
795 | allow_unadvertised_object_request |= ALLOW_TIP_SHA1; | |
796 | else | |
797 | allow_unadvertised_object_request &= ~ALLOW_TIP_SHA1; | |
798 | } else if (!strcmp("uploadpack.keepalive", var)) { | |
05e95155 JK |
799 | keepalive = git_config_int(var, value); |
800 | if (!keepalive) | |
801 | keepalive = -1; | |
802 | } | |
daebaa78 JH |
803 | return parse_hide_refs_config(var, value, "uploadpack"); |
804 | } | |
805 | ||
def88e9a LT |
806 | int main(int argc, char **argv) |
807 | { | |
8d630132 | 808 | char *dir; |
960deccb PA |
809 | int i; |
810 | int strict = 0; | |
811 | ||
5e9637c6 ÆAB |
812 | git_setup_gettext(); |
813 | ||
bbc30f99 | 814 | packet_trace_identity("upload-pack"); |
2fb3f6db | 815 | git_extract_argv0_path(argv[0]); |
afc711b8 | 816 | check_replace_refs = 0; |
2fb3f6db | 817 | |
960deccb PA |
818 | for (i = 1; i < argc; i++) { |
819 | char *arg = argv[i]; | |
820 | ||
821 | if (arg[0] != '-') | |
822 | break; | |
42526b47 SP |
823 | if (!strcmp(arg, "--advertise-refs")) { |
824 | advertise_refs = 1; | |
825 | continue; | |
826 | } | |
827 | if (!strcmp(arg, "--stateless-rpc")) { | |
828 | stateless_rpc = 1; | |
829 | continue; | |
830 | } | |
960deccb PA |
831 | if (!strcmp(arg, "--strict")) { |
832 | strict = 1; | |
833 | continue; | |
834 | } | |
59556548 | 835 | if (starts_with(arg, "--timeout=")) { |
960deccb | 836 | timeout = atoi(arg+10); |
9462e3f5 | 837 | daemon_mode = 1; |
960deccb PA |
838 | continue; |
839 | } | |
840 | if (!strcmp(arg, "--")) { | |
841 | i++; | |
842 | break; | |
843 | } | |
844 | } | |
a6080a0a | 845 | |
960deccb | 846 | if (i != argc-1) |
def88e9a | 847 | usage(upload_pack_usage); |
04b33055 | 848 | |
e1464ca7 | 849 | setup_path(); |
04b33055 | 850 | |
960deccb | 851 | dir = argv[i]; |
113b9475 | 852 | |
8d630132 | 853 | if (!enter_repo(dir, strict)) |
05ac6b34 | 854 | die("'%s' does not appear to be a git repository", dir); |
ad491366 | 855 | |
daebaa78 | 856 | git_config(upload_pack_config, NULL); |
def88e9a LT |
857 | upload_pack(); |
858 | return 0; | |
859 | } |